Use the given information to find the exact value of the trigonometric function.sin ? = 
, tan ? > 0
Find cos 
.
A. 
B. 
C. 
D. 
Answer: D
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Solve the problem.Find three consecutive integers such that the sum of the squares of the smaller two is equal to the square of the largest.
A. -1, 0, 1 or 3, 4, 5 B. -1, 0, 1 C. -3, -4, -5 D. 3, 4, 5
Find the present value. Round to the nearest cent.To get $2000 after 10 years at 10% compounded semiannually
A. $1,246.22 B. $771.09 C. $753.78 D. $791.47
Evaluate the expression for other given values of the variables.x2 + 7x + 8 for x = 9
A. 96 B. 89 C. 80 D. 152
Without graphing, decide:(a) Are the graphs of the equations are identical lines, parallel lines, or lines intersecting at a single point?(b) How many solutions does the system have?
A. identical lines; infinite number of solutions B. lines intersecting at a single point; one solution C. parallel lines; no solution